The Effect of Addition of Limestone powder and Granulated Blast Slag in Concrete
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Abstract
The comprehensive programme is taken up to study this ground granulated blast furnace aggregate used as a course aggregate in pavement concrete. In this, replacing the coarse aggregate to ground granulated blast furnace aggregate partially varying 0 to 50% and calculating maximum compressive strength and taking their corresponding Poisson's ratio and modulus of elasticity. Flexural strength of concrete mix decrease with increase in percentage (%) of GGBFS at the age of 7 and 28 days as compared to mix but it was nearly equal with increase in the percentage of GGBFS at the age of 56 days. The Spilt tensile strength of mix with different cement replacement 10%, 20%, 30%, 40%, showed in decrease for all replacement at 7 days and 28 days as compared to control mix due to slower rate of reaction. The Spilt tensile strength of the mix with 20%, 30% cement replacement better performed than control mix at 56 days. The results obtained from the study shows that the percentage (%) of GGBFS (10-40%) in concrete increased the Sulfate and Chloride resistance.
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